Oil burner



Dec. 1, 1931. WILCOX 1 ,834,326

OIL BURNER Filed Jan. 15, 1928 2 Sheets-Shea} 1 INVENTOR. [fl W5 Z'W/zmx Y B V a l A TTORNEY- Patented Dec. 1, 1931 UNETED STATES anna PATENT eerie-s LEWIST. WILCOX, OF PEEKSKILL, NEW YORK OIL BURNER Application filed January 13, 1928. Serial No. 248,406.

As shown in the above patentand application my invention pertains to burners which comprise generally afdouble walled tubular burner shellhousing a wick holder slidable longitudinally and vertically in the lshell. Theshell and wick are usually supplied with oil from an external tankthrough suitable 'rip e- It'is the purpose 7 v 'vide a wick holder readily adjustable in the burner shell, to provide jafsuitable limiting stop for, the wick capable of being locked in position and to providela reversible ;w ick V holder which may beiriserted in anyposition without disturbing the operation of the raising medium. Anja dditional feature is the particular manner of securing thehurner to the burner base constituting aresilient hook. I'accomplish the above objects forming vertical ribs upon one of the' walls of the burner which serve as guides for the wick holder and by cutting longitudinal diametrically oppositeslots in thewick holder and forming racks on the four edges thereof which cooperate witha toothed memberextending across the holder to raiseor-lower the holder. The toothed. rod is set on from the center of the holder-a distance substantiallyequal to the depth of'the'racktooth to cause it to engage the teeth on one side of the slots only.

A tubular wick stop "is provided which,

slides within the innerwall of the burner shell and is guided upon. ribs formed .upon the inner wall of the shell, thestop member, 'having projecting portionsextending intothe path of travel of the wick. Anoperating rod is secured to the stop member'and projects through the burnerby'means of which the stop member may be raised or' lowered and locked in either'position. A generally U- shaped clamping-hook each arm of. which is bent into a' reverse curve to give it "greater elasticity is pivotally secured to 'the burner perpendicular to that of Fig. 1;

.trated particularly in Figs. 1,2, 3 and there "nally therebetween. At the bottom end the bva packing nut 7a. The lower' end of the burner shell rests upon the upper end of a and extends therebelow to engage and hook over the fuelpipe.

- A detailed description will be, given in con- 'nection'with the drawings in which :1 j

v Fig. 1. is a longitudinal section through a burner shell and a portion ofthe base structure;

Fig. 2 is a similar section takenon aplane I Fig. 3 is'a section on line 3.3 Qf

Fig. v4 is a transverse'section below the upper surface of the wick .stop of a slightly .inodified form illustrating a differentvwick p I adjustment; 4 of this invention to prof v wick holder .and wick stop, constructed in acv Fig. 5 is a plan of a burner shell, wick,

cordance with this invention;

' Fig. 6 is a longitudinal section through a modified form of burner shell F-ig. 7 :is a side elevation ofa wick holder .70 and adjusting rod, and V Fig. 8 is a section on line 8 8 ofFig. .6. In the embodiment of my invention illusis shown a burner shell comprising anouter tubular wall 1, the upper end of which is flanged outwardly to form a seating ledge 2 fora drum (not shown) and a concentric tubular inner wall 3 also having a flanged upper end providing a seating ledge 30pfor means later described. The'two walls are spaced apart sufficiently'to permit awick 4 attached to wick holder 5' to slide longitudio two walls arecrimped together thus forming a fuel well forthe wick which well is fed from the usual external tank (not shown) through the usual elbow 5. pipe connection 6 leading to fuel pipe 7 and connected thereto L sub-shell or base 8 seating upon an inturned flange 9-formed in the upper end of sub-base 8 just below the upper edge thereof. The bnrn- 1 er shell and sub-base may be riveted, welded or otherwise permanently secured together if so desired. The lower end of the sub-base seats upon a raised annular seating flange 1O struck up from the burner base 10a in a manner similar to that disclosed in my application Serial No. 223,299. The entire assembly is secured to the base 10 by means of a gen erally V-shaped bale or hook wire 11 the arms 12 of which are secured to a cross bar 13 attached to the inner wall 2 at diametrically opposite points, the arms being bent into a double or reverse curve joined at the lower ends a hook portion 14 adapted to extend through an opening in the burner base and be sprung over the supply pipe 7 lying below the burner base.

To insure easy sliding movement of the wick holder the outer Wall 1 is formed with spaced vertical inwardly depressed ribs 18 which serve as spacing and guiding means for the wick holder in its longitudinal movements. The lower portion of the wick holder is provided with two diametrically opposite "longitudinal slots, all four edges of which have plates 19 secured thereto having rack teeth 20 formed upon the opposing edges thereof, shown more particularly in Figs. 7 and 8. A toothed vor splined rod 21 extends across the burner shell within a sheath 21a and is supported in suitable bearings 22 and 23 in the shell substantially as disclosed in the reissuedPatent No. 16,7 94. The rod does not-extend diametrically across the-center of the burner shell but is oifset from the center a distance substantially equal to the depth of the teeth of the racks. The rod is of such diameter that it will engage only the teeth on one side of the, slots and clear the teeth on the other side. Thus regardless of which of the two possible ways the holder is inserted in the shell and placed over the rod with the teeth of the rod engaging the teeth of the racks, rotation of the rod 21 in a given direction will always raise the holder, and rotation in the reverse direction will always lower the holder. Any suitable knurled handle24 may be secured to the rod for turning the same.

The inner wall 2 has longitudinally vertical guiding-ribs 25 projecting inwardly therefrom formed by striking vertical depressions in the wall at spaced intervals. These depressions form guides for an inverted cup shaped skirt portion 26 of a dish shaped longitudinal movable wick stop member 27 which latter element is riveted to the center portion of the skirt which has the center thereof raised to space the stop member from the remainder of the top of the skirt portion. The side walls of the cup are perforated as at 28 to provide communication with the space 29 between the skirt and inner wall. The stop member 27 has tongues 30 struck downwardly therefrom to provide additional support for the stop member 27 and to provide apertures therein to permit air to pass therethrough. Additional open- ,ings 32 are formed in the stop member for the same purpose. The dish shaped stop member is formed with upwardly extending lugs 33 which are bent outwardly at their extremities to provide horizontal fingers 34 lying in the path of movement of the wick to constitute a limiting stop for the wick. In its lowermost position the stop member seats on ledge 3a formed in the upper end of the inner wall of the burner shell. The stop member may be raised or lowered by means of a rod 35 secured at its upper end to the under side of the top of the skirt 26 and extending downwardly through the burner. The lower end is bent outwardly as at 36 :and *projects eXteriorly of the shell through a U-shaped slot 37 cut in the sub-base and by means of which the stop member may be locked in raised or lowered position. A suitable handle 38 is fastened to the outer end of the rod.

Combustion takes place between two concentric perforatedtubes (indicated in Fig. 2) The lower end of the outer tube rests upon seat 2 and .the inner tube rests upon a ledge 39 formed in the stop member 27.

In Fig. 4 there is illustrated a slightly modified form in which the wick holder is raised or lowered by means of an inclined rod 21" having a gear 40 upon its lower end adapted to engage perforations 41 in the wick holder, the gear and lower end of the rod 21 being enclosed in a cap 42. By this arrangement the slot 37 may be cut in the front of the su'bbase and the rod 35 may be brought out at the front of the burner. In all other vrespects this modification is similar to that shown in Figs. 1, 2, 3 and 5.

In the modification shown in Figs. 6., 7 and 8 I have illustrated my 01f center wick drive applied to asimpler form of burner. In this embodiment the wick stop is omitted as is the sub-shell or base and the walls of the burner shell converge slightly at their upper ends.

In other respects the burner is substantially the same as illustrated in the other figures.

It will be noted that in this construction the ribs 18 are of the depth of the flare of the outer wall 1 and consequently form guide rails in line with the top edge of the wall. The combined thickness of the wick and wick holder is equal to the space between the walls at their upper edge, and consequently the wick is spaced from the inner wall adistance equal to the outward flare of that wall. This clearance of the wick and holder from both walls which is maintained by the ribs enables the wick to move easily. The metallic wick holder slides upon these rails with negligible friction, and furthermore the trouble arising from the tendency of rust to accumulate on the relatively movable metallic surfaces and impair the facility of movement of the wick holder is eliminated.

It follows from the foregoing that I have provided a simply constructed burner which is practically foolproof, one that may be readily cleaned, one in which the wick will always be freely movable and one which may be readily disassembled for cleaning and re newal purposes. The particular wick raising structure makes 1t lIIlPOSSlblG'tO replace a wick holder in a wrong position since either way is a correct one. The vertical guidlng rlbs' provide channelways therebetween which will allow any particles of carbon or other foreign substances to fall down without binding the wick. My particular wick stop member is also free in its operation and may be easily ralsed or lowered without diswithout departing from the spirit and scope of the invention as defined in the appended claims.

I claim:

1. In a liquid fuel burner, a longitudinally movable wick holder provided with diametriv cally opposite longitudinal slots having racks on both edges thereof and a single toothed rod extending across said wickholder and positioned oflt center substantially the depth of the teeth of said racks, said slots being of a width greater than the diameter of said rod by at least the depth of said teeth.

2. In a stove, a burner base, an open burner seat in said base, a fuel supply pipe extending across said burner seat, a burner on said seat and a substantially V-shaped wire hook member depending from said burner through the open burner seat, the arms of said member being reversibly curved'and joined at their ends by a hook portion adapted to be releasably hooked under the supply pipe to secure the burner thereto.

3. In a liquid fuel burner, a double walled tubular burner shell, a longitudinally movable Wick and wick holder slidin gly mounted between said walls and a longitudinally movable tubular wick stop member slidably supported within said shelland having portions thereof extending into the path of movement of said wick, the inner wall of said shell having ribs thereon for guiding said stop member. I

4. In a liquid fuel burner, a double wall tubular burner shall, a longitudinally movable wick and wick holder sliding'ly mounted between said walls, a longitudinally m'ovable tubular wick stop member slidably sup ported within said shell and having portions thereof extending into the path of movement of said wick, the inner wall of said shell having guides thereon for guiding said stop member, and means for raising or lowering said stop member.

- ,5. In a liquid fuelburner, a double walled tubular burner shell, a longitudinally'movable wick and wick holder slidingly mounted between-said walls, a longitudinallyv :movable tubular wick stop member slidably sup-" ported within said'shell andhaving portions thereof extending intothe path of movement of saiClfwick, the inner wall of said shell having guides thereon for guiding ,saidjstop .member, means for raising or; lowering said' stop member; and means for locking said stop member in a raised or lowered position.

6. Ina liquid fuel burner, a double Walled tubular burner shell, a longitudinally movable wick and wick holder slidin'gly mounted-ii {between saidvwalls, a; longitudinally jmovable tubular, wick stop member slidably s'up- 1 ported Within said shell and having portions thereof extending into, the path of movement -of. said wick,the inner wall'of said shell having guides thereon for guiding said stop member, means for raising or lowering said I stop member comprising a rod depending Q from said stop member and extending eX- teriorly of said shell.

7 In a liquid fuel burner, a double walled tubular burner shell, a longitudinally movable wick and wick holder slidingly mounted between said walls, a longitudinally movable tubular wick stop member slidably sup-'= ported within said shell and having portions thereof extending in the path of movement of said wick, the inner wall of said shell hav- 1 ing guides thereon for guiding said stop member, means for raising or lowering said;

stop member, comprising a rod depending from said stop member and extending eX- teriorly of said shell, said shell having a 7' U-shaped' slot therein through which said rod projects whereby said stop member mayw be locked in its raised or lowered position.

8. A liquid fuel burner comprising a 'tubular burner shell, a tubular wick holder fitting and slidable within said shell and having twd longitudinal;diametrically opposed slots of the same width extending from the bottom edge of the holder, both side edges of each slot being toothed to constitute a rack, and an actuating rod for the wick holder extending across and bearing in the shell in:

the range of the said slots when the wick holder is in the shell and having pimonteeth on its two portions received within the slots,

said rod being disposed withits axis parallel "to the diametrical line intersecting the center lines of the slots and ofi'set therefrom so thatits pinion teeth engage the rack teeth of both slots on one side and are clear of "the rack teeth on the other side of the said diametral line.

9. In a'jstove, a fuel supply pipe, a tubular burner seated upon the pipe, and means for resiliently hooking the burner to the pipe comprising a hook depending directly un-- derneath the burner and attached to'the in-= 4 qgee igeze tevior o'f the *burn'er substantially above its bottom edge, the attaching arm being of resilient Wire having in its "length a "reverse curve to permit-the length of the hook from 5 its point of attachment to be resiliently expanded and the proportions of the partsbeing such that the hook springs underneath the pipe :and holds the burner on the pipe ainder spring'tension.

- :10. In stove, a fuel supply pipe, a tu- 'bular bunner seated uponthe pipefand me'ans for resilientlyhooking theburnerto the pipe comprising "a substantially 'V-shaped Wire hook member depending from the burner in v 115 substantially the axis thereof, the arms of the hook-me'nib'er being reversly'curved and j oined'at their ends by a hook portion adapted to be :releasably hooked under the supply pipe to secure the burner thereto. In witness whereof, I hereunto sfibscfibe :my signature.

T. WlIJOQX. 

